199084434623 has 2 divisors, whose sum is σ = 199084434624. Its totient is φ = 199084434622.

The previous prime is 199084434599. The next prime is 199084434673. The reversal of 199084434623 is 326434480991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199084434623 - 2²² = 199080240319 is a prime.

It is a super-2 number, since 2×199084434623² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199084434673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99542217311 + 99542217312.

It is an arithmetic number, because the mean of its divisors is an integer number (99542217312).

Almost surely, 2^199084434623 is an apocalyptic number.

199084434623 is a deficient number, since it is larger than the sum of its proper divisors (1).

199084434623 is an equidigital number, since it uses as much as digits as its factorization.

199084434623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 199084434623 in words is "one hundred ninety-nine billion, eighty-four million, four hundred thirty-four thousand, six hundred twenty-three".